The Pyrido[4, 3-c]pyridazin-5(6H)-one, with the CAS registry number 136411-57-9, belongs to the product category of Pyridine. This chemical's molecular formula is C₇H₅N₃O and molecular weight is 147.13. What's more, its IUPAC name is 6H-Pyrido[4, 3-c]pyridazin-5-one.

Physical properties about Pyrido[4, 3-c]pyridazin-5(6H)-one are: (1)# of Rule of 5 Violations: 0; (2)ACD/BCF (pH 5.5): 1; (3)ACD/BCF (pH 7.4): 1; (4)ACD/KOC (pH 5.5): 15.214; (5)ACD/KOC (pH 7.4): 15.208; (6)#H bond acceptors: 4; (7)#H bond donors: 1; (8)#Freely Rotating Bonds: 0; (9)Polar Surface Area: 54.88 Å²; (10)Index of Refraction: 1.611; (11)Molar Refractivity: 37.692 cm³; (12)Molar Volume: 108.534 cm³; (13)Polarizability: 14.942×10^-24 cm³; (14)Surface Tension: 62.078 dyne/cm; (15)Density: 1.356 g/cm³; (16)Flash Point: 284.636 °C; (17)Enthalpy of Vaporization: 82.627 kJ/mol; (18)Boiling Point: 547.035 °C at 760 mmHg; (19)Vapour Pressure: 0 mmHg at 25 °C.

Preparation of Pyrido[4, 3-c]pyridazin-5(6H)-one: this chemical is prepared by 3-(2-Dimethylamino-vinyl)-pyridazine-4-carboxylic acid ethyl ester by heating. The reaction needs reagent NH₄OAc and solvent Ethanol. The reaction time is 2 days. The yield is about 83 %.

You can still convert the following datas into molecular structure:
(1) SMILES: c1c[nH]c(=O)c2c1nncc2
(2) InChI: InChI=1/C7H5N3O/c11-7-5-1-4-9-10-6(5)2-3-8-7/h1-4H,(H,8,11)
(3) InChIKey: XLJCKGYGXXOHMK-UHFFFAOYAX